Internet activist Lyudmila Savchuk spent two months working in a "troll factory" in St. Petersburg, Russia. She was tasked with writing posts that would inflame anti-American sentiment among Russians. Others at the factory would write negative posts about American politicians, the war in Ukraine and America's NATO allies.
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A hammock-canoe drawing, U.S. Patent No. 299,951, is displayed in a June 1884 publication of the U.S. Patent and Trademark Office in Alexandria, Va. Critics of the patent system say it's too easy for people to save a slew of semi-realistic ideas, then sue when a firm separately tries to make something similar.
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Some colleges and police departments are starting to use software that scans social media to identify local threats, but most tips still come from members of the public.
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